diff --git a/tests/core/test_common_utils.py b/tests/core/test_common_utils.py
index 23ddb7e7..d91150a9 100644
--- a/tests/core/test_common_utils.py
+++ b/tests/core/test_common_utils.py
@@ -372,3 +372,10 @@ def test_bootstrap_rb_sample_obs3d():
         for i in range(ensemble_size):
             for j in range(i + 1, ensemble_size):
                 assert not np.array_equal(batch.obs[i], batch.obs[j])
+
+
+def test_truncated_normal():
+    t_original = torch.empty((100, 2))
+    t_new = mbrl.util.math.truncated_normal_(t_original)
+    assert t_original is t_new
+    assert (t_original > -2).all().item() and (t_original < 2).all().item()